Fire putty is also widely used for sealing against the escape of smoke and flue gases in residential and commercial appliances, such as stoves, chimneys, and central heating systems. How to Use Fire Cement on Flue Pipe? Slough observer:Suspected Second World War mortar exploded in Windsor today, 3 October 2014. Example of use of the word "mortar" for a mortar bomb Precision guided [ edit ] Soldiers standing in front of an M1064 mortar carrier, holding a XM395 Precision Guided Mortar Munition prototype at Fort Benning, Georgia, February 2006

Fully set within one hour, the compound requires up to 30 days to cure - where it expands to tightly fill the space - before it is fully fire resistant to then preventthe spread of fire and smoke through openings in fire rated walls and floors, including openings formed around building service penetrations. The PFP FR EX fire resistant mortar will also maintain the acoustic design performance of surfaces. Where plastic pipes pass through the mortar, our pipe wraps should be used and can be easily added through the mortar and resealed with further mortar. Supplied in a 20kg bag, the mortar is easy to sand or drill, dries an off-white colour and is suitable for painting once cured. Brandt mle 27 (Mortier Brandt de 81 mm modele 27) Infantry Mortar". Militaryfactory.com. Archived from the original on 1 December 2017 . Retrieved 19 November 2017. A mortar can be moved around by one or more people (bigger mortars can usually be broken down into parts) or moved around in a vehicle. An infantry mortar can usually be set up and fired from a mortar-carrier. A mortar-carrier is a modified armoured vehicle or one built especially to be a mortar-carrier. They have a big hatch on the roof. Mortars with two barrels—like the AMOS PT1—are the latest kinds of heavy mortar. They are put on carriers such as armoured personnel carriers, tank chassis and patrol boats. [3] The German Army studied the Siege of Port Arthur, where heavy artillery had been unable to destroy defensive structures like barbed wire and bunkers. As a result, they developed a short-barrelled rifled muzzle-loading mortar called the Minenwerfer. Heavily used during World War I, they were made in three sizes: 7.58cm (2.98in), 17cm (6.7in) and 25cm (9.8in).Vesa Toivonen, 2003, From Tampella to Patria, 70 Years of Finnish Heavy Weapons Production, Tampere, ISBN 952-5026-26-4 Do not let any unnecessary putty to dry out on the surfaces of the stove or flue pipe. This excessive fire cement can become incredibly difficult to remove later on. Modern mortars and their ammunition are generally much smaller and lighter than long range artillery such as guns and howitzers, which allows light and medium (typically, 60mm and 81mm/82mm) mortars to be considered light weapons; i.e. capable of transport by personnel without vehicle assistance. Light and medium mortars are easy to move around. They are usually used by infantry units. Mortars can fire from a trench or defilade.

Mortars are usually smaller and lighter than howitzers and field guns. When the mortar bomb is launched, it descends at a very steep angle (almost straight down). [1] It is suitable for all kinds of INTERIOR use, but must not to be used outdoors, unless it is protected from water by a roofed area or an additional render coat with a different material. A mortar is an artillery weapon which fires explosive shells. The shells are known as (mortar) bombs. They are fired at targets which are close, as mortars do not have long range. It has a short barrel which fires the mortar bomb at a low speed high into the air to reach its target. They have been used since medieval times. Mortars are made in different sizes, from large and heavy mortars to infantry mortars which can be carried by just one soldier. They are called an indirect fire weapon because the bomb drops onto the target from above, rather than being aimed straight at it. Soldiers firing a mortar do not need to be able to see their target. Spigot mortars are generally out of favour in modern usage, replaced by small conventional mortars. Military applications of spigot mortars include: John Norris (2002). Infantry Mortars of World War II. Osprey Publishing. pp.42–43. ISBN 978-1-84176-414-6. Archived from the original on 2015-03-20 . Retrieved 2016-03-27.During the Russo-Japanese War, Lieutenant General Leonid Gobyato of the Imperial Russian Army applied the principles of indirect fire from closed firing positions in the field and, with the collaboration of General Roman Kondratenko, he designed the first mortar that fired navy shells. Mortars are mainly medium calibre weapons. [1] However, mortars both bigger and smaller than this have been made. An example of a smaller mortar is the British 51 mm Light Mortar. The 51mm is carried by just one soldier. It is made up of only a tube and a base plate. A bigger example is the Soviet 2S4 M1975 Tyulpan ( tulip flower) 240mm self-propelled mortar.